#!/bin/ash
# Apparently, this is required for proper functionality with busybox 1.1.3
# Check out bug #197730 for more details.

. /etc/initrd.defaults

usage() {
	echo 'Usage:'
	echo '  modprobe moduleprefix'
	echo
	echo 'Example:'
	echo '  modprobe eepro100'
	echo
	echo 'Note: Do not pass the suffix to modprobe!'
	exit 1
}

# Pass module name to this function
modules_dep_list() {
	if [ "$#" -lt '1' ]
	then
		echo 'modules_dep_list(): Improper usage!'
		exit 1
	fi
	cat /lib/modules/${KV}/modules.dep | grep /"${1}${KSUFF}:" | cut -d':'  -f2
}


# Pass module deps list
strip_mod_paths() {
	local x
	local ret
	local myret

	[ "$#" -lt '1' ] && return

	for x in ${*}
	do
		ret=`basename ${x} | cut -d. -f1`
		myret="${myret} ${ret}"
	done
	echo "${myret}"
}

LOADED_MODULES=''
is_module_already_loaded() {
	local x
	if [ "$#" != '1' ]
	then
		echo 'is_module_already_loaded(): Improper usage!'
	fi

	for x in ${LOADED_MODULES}
	do
		if [ "${x}" = "${1}" ]
		then
			# Yep, module is loaded
			return 0
		fi
	done
	return 1
}

real_mod_path() {
	# Find -name is no good since the return status is always zero
	find "/lib/modules/${KV}" | grep /"${1}${KSUFF}"
}

modprobe2() {
	local x
	local deps
	local real_path
	local modlist
	local ret

	local echoAppend
	local echoFlags

	if [ "$#" -lt '1' ]
	then
		usage
		exit 1
	fi
	real_path=`real_mod_path ${1}`
	if [ "${real_path}" = '' -o "${real_path}" = ' ' ]
	then
		[ "${2}" = '-n' ] && echo -n " -> $1"
		echo ' module not found.'
		exit 2
	fi
	modlist=`modules_dep_list ${1}`
	if [ "${modlist}" != '' -a "${modlist}" != ' ' ]
	then
		deps=`strip_mod_paths ${modlist}`
	else
		deps=''
	fi
	# Make sure we don't do any endless loops!

	LOADED_MODULES="${LOADED_MODULES} ${1}"
	for x in ${deps}
	do
		if ! is_module_already_loaded ${x}
		then
			if [ "${x}" != '' -a "${x}" != ' ' ]
			then
				modprobe2 "${x}" -n
			fi
		else
			filler=1
		fi
	done
	# placing options into x
	x="${real_path##*/}"
	x="`cat "/etc/module_options/${x%.ko*}".* 2>/dev/null`"
	${INSMOD} ${real_path} ${x} > /dev/null 2>&1
	ret=$?
	if [ ${ret} -eq 0 ]
	then
		echoAppend=' loaded.'
		[ "${2}" = '-n' ] && echoFlags='-n' && echoAppend=', '
		echo ${echoFlags} "${1}${echoAppend}"
	fi
	return $ret
}

if [ "$#" -lt '1' ]
then
	usage
fi

[ -f '/modules.cache' ] || touch /modules.cache
for x in `cat /modules.cache`
do
	LOADED_MODULES="${LOADED_MODULES} ${x}"
done

modprobe2 ${1}
modprobe_ret=$?

[ -f '/modules.cache' ] && rm -f /modules.cache > /dev/null 2>&1
for x in ${LOADED_MODULES}
do
	echo $x >> /modules.cache
done

exit $modprobe_ret
